:root {
  --bg: #070a16;
  --bg-soft: #0e1430;
  --card: rgba(255, 255, 255, 0.07);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #f5f7ff;
  --muted: #aab3d6;
  --accent: #8b7cff;
  --accent-2: #54d6ff;
  --success: #78e7bc;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 5%, rgba(83, 63, 182, 0.38), transparent 28rem),
    radial-gradient(circle at 85% 20%, rgba(0, 169, 255, 0.20), transparent 26rem),
    var(--bg);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.8) 1px, transparent 1px),
    radial-gradient(circle, rgba(255,255,255,.55) 1px, transparent 1px);
  background-position: 0 0, 35px 55px;
  background-size: 90px 90px, 130px 130px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(7, 10, 22, 0.72);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
  letter-spacing: .08em;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--accent-2);
  position: relative;
  box-shadow: 0 0 30px rgba(84, 214, 255, .35);
}

.logo-mark::after {
  content: "";
  position: absolute;
  width: 46px;
  height: 12px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-18deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--muted);
  transition: .2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: white;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: white;
  font-size: 26px;
  cursor: pointer;
}

.hero {
  min-height: 76vh;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: 13px;
  font-weight: 800;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

h1, h2, h3 {
  line-height: 1.1;
  margin-top: 0;
}

h1 {
  font-size: clamp(3rem, 8vw, 6.4rem);
  letter-spacing: -.06em;
  margin: 20px 0 24px;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  letter-spacing: -.04em;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.lead {
  color: var(--muted);
  max-width: 680px;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border-radius: 999px;
  font-weight: 750;
  border: 1px solid transparent;
  transition: .2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07101d;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px rgba(84,214,255,.2);
}

.btn-secondary {
  border-color: rgba(255,255,255,.16);
  background: rgba(255,255,255,.04);
}

.btn-secondary:hover {
  background: rgba(255,255,255,.09);
}

.planet-scene {
  min-height: 480px;
  position: relative;
  display: grid;
  place-items: center;
}

.planet {
  width: min(360px, 72vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, #c7f1ff, transparent 6%),
    radial-gradient(circle at 38% 32%, #6ee5ff, transparent 18%),
    radial-gradient(circle at 42% 40%, #725fff, #261960 60%, #10092a);
  box-shadow:
    inset -45px -30px 70px rgba(0,0,0,.42),
    0 0 80px rgba(84,214,255,.16),
    0 0 180px rgba(139,124,255,.17);
  position: relative;
}

.planet::after {
  content: "";
  position: absolute;
  inset: 45% -27%;
  height: 12%;
  border: 20px solid rgba(199, 241, 255, .52);
  border-left-color: rgba(139, 124, 255, .24);
  border-right-color: rgba(139, 124, 255, .8);
  border-radius: 50%;
  transform: rotate(-14deg);
  box-shadow: 0 0 25px rgba(84,214,255,.12);
}

.orbit-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: white;
  top: 17%;
  right: 15%;
  box-shadow: 0 0 18px white;
}

.section {
  padding: 86px 0;
}

.section-head {
  margin-bottom: 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.card p {
  color: var(--muted);
  margin-bottom: 0;
}

.number {
  font-size: 2.25rem;
  font-weight: 850;
  color: var(--accent-2);
}

.banner {
  padding: 38px;
  border-radius: 30px;
  background:
    linear-gradient(120deg, rgba(139,124,255,.18), rgba(84,214,255,.12)),
    rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.page-hero {
  padding: 100px 0 50px;
}

.page-hero h1 {
  font-size: clamp(3rem, 7vw, 5.7rem);
  margin-bottom: 16px;
}

.event-list {
  display: grid;
  gap: 16px;
}

.event {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 26px;
  align-items: center;
  padding: 24px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.045);
}

.date {
  color: var(--accent-2);
  font-weight: 800;
  letter-spacing: .08em;
}

.event p {
  margin: 4px 0 0;
  color: var(--muted);
}

.tag {
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(120,231,188,.1);
  color: var(--success);
  font-size: 13px;
  white-space: nowrap;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.art {
  min-height: 260px;
  border-radius: 26px;
  border: 1px solid rgba(255,255,255,.11);
  overflow: hidden;
  position: relative;
  background-color: #131936;
}

.art::after {
  content: attr(data-title);
  position: absolute;
  left: 20px;
  bottom: 18px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(7,10,22,.64);
  backdrop-filter: blur(10px);
  font-weight: 700;
  font-size: 14px;
}

.art:nth-child(1) {
  grid-column: span 7;
  background:
    radial-gradient(circle at 70% 34%, #fff 0 2%, #5be1ff 3%, transparent 8%),
    linear-gradient(135deg, #2b2260, #0f1535 55%, #082533);
}
.art:nth-child(2) {
  grid-column: span 5;
  background:
    radial-gradient(circle at 52% 48%, #ffefc8 0 10%, #ff8c7e 11% 19%, transparent 20%),
    radial-gradient(circle at 58% 51%, rgba(255,140,126,.3), transparent 34%),
    #160e2e;
}
.art:nth-child(3) {
  grid-column: span 5;
  background:
    linear-gradient(20deg, transparent 44%, rgba(84,214,255,.8) 45% 46%, transparent 47%),
    radial-gradient(circle at 20% 30%, #fff 0 1px, transparent 2px),
    radial-gradient(circle at 80% 60%, #fff 0 1px, transparent 2px),
    #071623;
}
.art:nth-child(4) {
  grid-column: span 7;
  background:
    radial-gradient(ellipse at 45% 54%, rgba(139,124,255,.8), transparent 22%),
    radial-gradient(ellipse at 60% 44%, rgba(84,214,255,.6), transparent 18%),
    radial-gradient(ellipse at 52% 48%, rgba(255,255,255,.25), transparent 38%),
    #100b27;
}

.contact-layout {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 24px;
}

.contact-list {
  display: grid;
  gap: 14px;
}

.contact-item {
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(255,255,255,.045);
  border: 1px solid rgba(255,255,255,.08);
}

.contact-item strong {
  display: block;
  margin-bottom: 4px;
}

.contact-item span {
  color: var(--muted);
}

form {
  display: grid;
  gap: 14px;
}

input, textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.13);
  background: rgba(255,255,255,.055);
  color: white;
  border-radius: 16px;
  padding: 14px 16px;
  font: inherit;
  outline: none;
}

input:focus, textarea:focus {
  border-color: var(--accent-2);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.footer {
  padding: 36px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  color: var(--muted);
  margin-top: 60px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.small-links {
  display: flex;
  gap: 18px;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 54px;
  }

  .planet-scene {
    min-height: 390px;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .event {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .gallery .art {
    grid-column: 1 / -1;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 76px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    border-radius: 18px;
    background: rgba(12,17,39,.98);
    border: 1px solid rgba(255,255,255,.1);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 10px 12px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .hero, .section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .planet-scene {
    min-height: 310px;
  }

  .banner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}